Cove Marina we sell ethanol free, 91 octane gasoline. Here’s an article from Boat U.S. discussing the hazards of ethanol. Here is an interesting article on growing repair issues using ethanol.  ALEXANDRIA, Va., June 30, 2016 – When it comes to recreational boating and the Federal Renewable Fuel Standard’s requirement to put more corn ethanol into gasoline, those that see its negative consequences the most are the industry workers that build, maintain, store or sell boats. Click on the link to read more http://www.boatus.com/pressroom/release.asp?id=1219#.V3VZso-cGUk